i have about 40 of them,what ever you do,better have lots of room as they get older,they get very aggressive to avoid this have other fish also to brake off aggression...good luck
they are known to be very aggressive against each-other,to resolve this you have to add referent kind....frontosa, i like having them together it works great...works for me every time..
not mixing with fronts is not a good idea. The tropheus can spook them and nip their trailers. A colony a lone will work great. I would not only recommend adding some gobies.